package day03;

public class IfDemo {
    public static void main(String[] args) {
        double price=300.0;
        if (price>=500){
            price*=0.8;
        }
        System.out.println("最终消费金额为"+price);
        int score= 99;
        if (score>=0&&score<=100){
            System.out.println("成绩合法");
        }else {
            System.out.println("成绩不合法");
        }
    }


}
